Determining the radial pair-distribution function within intergranular amorphous films by numerical nanodiffraction

C. T. Koch; S. H. Garofalini

doi:10.1016/j.ultramic.2005.11.005

Determining the radial pair-distribution function within intergranular amorphous films by numerical nanodiffraction

C. T. Koch, S. H. Garofalini

Rutgers University

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We report on an alternative method to electron nanodiffraction and fluctuation microscopy for the determination of the reduced density function G(r) of amorphous areas with small cross-sections. This method is based on the numerical extraction of diffraction data from the complex-valued exit-face wave function as obtained by HRTEM focal series reconstruction or electron holography. Since it is thus possible to obtain "diffraction data" from rectangular areas of any aspect ratio, this method is particularly suited for intergranular glassy films of only 1-2nm width, but lengths of several 100nm. A critical comparison of this method with the already established nanodiffraction and fluctuation microscopy will be made.

Original language	English
Pages (from-to)	383-388
Number of pages	6
Journal	Ultramicroscopy
Volume	106
Issue number	4-5
DOIs	https://doi.org/10.1016/j.ultramic.2005.11.005
Publication status	Published - Mar 1 2006

Keywords

Electron nanodiffraction
Focal series reconstruction
Intergranular glassy films

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Instrumentation

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10.1016/j.ultramic.2005.11.005

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AU - Garofalini, S. H.

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N2 - We report on an alternative method to electron nanodiffraction and fluctuation microscopy for the determination of the reduced density function G(r) of amorphous areas with small cross-sections. This method is based on the numerical extraction of diffraction data from the complex-valued exit-face wave function as obtained by HRTEM focal series reconstruction or electron holography. Since it is thus possible to obtain "diffraction data" from rectangular areas of any aspect ratio, this method is particularly suited for intergranular glassy films of only 1-2nm width, but lengths of several 100nm. A critical comparison of this method with the already established nanodiffraction and fluctuation microscopy will be made.

AB - We report on an alternative method to electron nanodiffraction and fluctuation microscopy for the determination of the reduced density function G(r) of amorphous areas with small cross-sections. This method is based on the numerical extraction of diffraction data from the complex-valued exit-face wave function as obtained by HRTEM focal series reconstruction or electron holography. Since it is thus possible to obtain "diffraction data" from rectangular areas of any aspect ratio, this method is particularly suited for intergranular glassy films of only 1-2nm width, but lengths of several 100nm. A critical comparison of this method with the already established nanodiffraction and fluctuation microscopy will be made.

KW - Electron nanodiffraction

KW - Focal series reconstruction

KW - Intergranular glassy films

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